QuakeIndex

rock burst · reviewed by a seismologist

M 2.7ml

10 km ENE of Paonia, Colorado

· 1.0 km deep · released about 340 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Delta County 33 kmGunnison County 47 kmPitkin County 59 kmGarfield County 84 kmMesa County 85 kmMontrose County 88 kmOuray County 89 kmLake County 103 kmEagle County 104 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 2.7 (ml)
Depth
1.0 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Delta County, 33 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3659 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

USGS catalogues this as rock burst, not an earthquake.

How big was it?

This earthquake released about 340 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 45,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 32,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.8× the energy of this one
  4. This earthquake M 2.7 about 340 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 38.9199, -107.4883. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Delta County, CO 33 km (21 mi) ENE of here earthquakes near Delta County
Gunnison County, CO 47 km (29 mi) NW of here earthquakes near Gunnison County
Pitkin County, CO 59 km (37 mi) WSW of here earthquakes near Pitkin County
Garfield County, CO 84 km (52 mi) SSE of here earthquakes near Garfield County
Mesa County, CO 85 km (53 mi) E of here earthquakes near Mesa County
Montrose County, CO 88 km (55 mi) NE of here earthquakes near Montrose County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

28 earthquakes have been recorded within 50 km since this one.

  1. 2.8 10 km NE of Redstone, Colorado
  2. 1.5 13 km ENE of Paonia, Colorado
  3. 1.9 11 km E of Paonia, Colorado
  4. 1.6 9 km ESE of Paonia, Colorado
  5. 1.8 11 km NNE of Paonia, Colorado
  6. 2.4 9 km NW of Mount Crested Butte, Colorado
  7. 1.9 10 km SE of Crystal, Colorado
  8. 2.1 3 km NNW of Mount Crested Butte, Colorado
  9. 1.9 10 km NNW of Mount Crested Butte, Colorado
  10. 1.6 3 km WNW of Crystal, Colorado
  11. 2.9 17 km E of Paonia, Colorado
  12. 2.4 3 km WNW of Marble, Colorado
  13. 1.6 7 km SSW of Redstone, Colorado
  14. 1.7 7 km WNW of Marble, Colorado
  15. 2.5 5 km W of Marble, Colorado

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

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